Patents by Inventor Yu-Kang Lo
Yu-Kang Lo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11916427Abstract: The present invention discloses a battery module and a power arrangement method. The battery module includes a battery unit, an energy storage element, a switch, a functional circuit and a control unit. The energy storage element is coupled to the battery unit. The switch is coupled to the energy storage element. The functional circuit is respectively coupled to the battery unit and the energy storage element. The control unit is respectively coupled to the functional circuit and the switch, configured to control the functional circuit to cause the energy storage element to be coupled to the battery unit so that the battery unit charges the energy storage unit, or configured to control the functional circuit to cause the energy storage element to be decoupled with the battery unit so that a discharge path is formed.Type: GrantFiled: July 26, 2021Date of Patent: February 27, 2024Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, LITE-ON TECHNOLOGY CORPORATIONInventors: Yung-Ping Tong, Yu-Kang Lo
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Publication number: 20220216719Abstract: The present invention discloses a battery module and a power arrangement method. The battery module includes a battery unit, an energy storage element, a switch, a functional circuit and a control unit. The energy storage element is coupled to the battery unit. The switch is coupled to the energy storage element. The functional circuit is respectively coupled to the battery unit and the energy storage element. The control unit is respectively coupled to the functional circuit and the switch, configured to control the functional circuit to cause the energy storage element to be coupled to the battery unit so that the battery unit charges the energy storage unit, or configured to control the functional circuit to cause the energy storage element to be decoupled with the battery unit so that a discharge path is formed.Type: ApplicationFiled: July 26, 2021Publication date: July 7, 2022Inventors: Yung-Ping TONG, Yu-Kang LO
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Patent number: 10763553Abstract: A battery charging apparatus includes a charging power source, a plurality of charging circuits, a plurality of batteries, a plurality of switching circuits and a control circuit. The control circuit is configured to determine the type of charging power source based on a current-voltage curve of the charging power source, and to control conduction states of the switching circuits to connect the charging circuits and the batteries in series in a series charging mode and to connect the charging circuits and the batteries in parallel in an equalizing charging mode. A battery charging method of the battery charging apparatus is also introduced.Type: GrantFiled: November 2, 2017Date of Patent: September 1, 2020Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-One Technology CorporationInventors: Yu-Hsiang Huang, Yu-Kang Lo
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Patent number: 10283992Abstract: An energy management system includes a power supply module, a charging module, an interface module and an energy management module. The power supply module provides an input power. The charging module generates, based on the input power, a first charge power and a second charge power in response to a first charge control signal and a second charge control signal. The interface module detects electrical energy stored in an energy storage device to generate a detection result. In response to the detection result, the energy management module determines an operating state of the energy storage device, and generates one of the first and second charge control signals.Type: GrantFiled: August 5, 2016Date of Patent: May 7, 2019Assignees: Lite-On Electronics (Guangzhou) Limited, Lite-On Technology Corp.Inventors: Ming-Tsung Hsieh, Yi-Chao Fan, Po-Jung Tseng, Shang-Jin Yan, Yu-Kang Lo
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Publication number: 20190131667Abstract: A battery charging apparatus includes a charging power source, a plurality of charging circuits, a plurality of batteries, a plurality of switching circuits and a control circuit. The control circuit is configured to determine the type of charging power source based on a current-voltage curve of the charging power source, and to control conduction states of the switching circuits to connect the charging circuits and the batteries in series in a series charging mode and to connect the charging circuits and the batteries in parallel in an equalizing charging mode. A battery charging method of the battery charging apparatus is also introduced.Type: ApplicationFiled: November 2, 2017Publication date: May 2, 2019Applicants: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology CorporationInventors: Yu-Hsiang Huang, Yu-Kang Lo
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Patent number: 9972433Abstract: A multiple winding transformer includes a core unit, a first winding set which has N (N?3) number of windings, and a second winding set which has at least one winding. The windings of the first winding set are overlappingly wound around the core unit. Each of the windings includes an input terminal and an output terminal. The input terminal of one of the windings is spaced apart from the input terminal of a next one of the windings by (360/N) degrees, and the input terminals are interconnected to form an input end. The output terminal of one of the windings is spaced apart from the output terminal of a next one of the windings by (360/N) degrees, and the output terminals are interconnected to form an output end.Type: GrantFiled: May 13, 2016Date of Patent: May 15, 2018Assignee: Lite-On Technology Corp.Inventors: Te-Hong Yang, Ming-Tsung Hsieh, Po-Jung Tseng, Yu-Kang Lo
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Patent number: 9906142Abstract: A resonant converting apparatus and a control method thereof are provided. The resonant converting apparatus includes a resonant converting circuit, a load detector, a control signal generator and a pulse frequency modulation (PFM) signal generator. The resonant converting circuit converts an input voltage into an output voltage to drive a load according to a PFM signal. The load detector detects a load status of the load. The control signal generator generates the control signal according to the load status and a PFM range. When the load status is a light load status, the control signal is divided into a plurality of first time periods and second time periods which are respectively arranged alternatively. The PFM signal is maintained to a reference voltage during the second time periods, and is a periodical signal having frequency substantially equal to a resonant frequency during the first time periods.Type: GrantFiled: August 25, 2016Date of Patent: February 27, 2018Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology CorporationInventors: Te-Hong Yang, Ming-Tsung Hsieh, Yu-Kang Lo
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Publication number: 20180019679Abstract: A resonant converting apparatus and a control method thereof are provided. The resonant converting apparatus includes a resonant converting circuit, a load detector, a control signal generator and a pulse frequency modulation (PFM) signal generator. The resonant converting circuit converts an input voltage into an output voltage to drive a load according to a PFM signal. The load detector detects a load status of the load. The control signal generator generates the control signal according to the load status and a PFM range. When the load status is a light load status, the control signal is divided into a plurality of first time periods and second time periods which are respectively arranged alternatively. The PFM signal is maintained to a reference voltage during the second time periods, and is a periodical signal having frequency substantially equal to a resonant frequency during the first time periods.Type: ApplicationFiled: August 25, 2016Publication date: January 18, 2018Applicants: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology CorporationInventors: Te-Hong Yang, Ming-Tsung Hsieh, Yu-Kang Lo
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Patent number: 9867247Abstract: An LED driver of an LED tube includes: an AC-to-DC converting module converting an AC voltage received from a ballast into an intermediate DC voltage that is smaller than or equal to a predetermined threshold voltage, and a DC-to-DC converting module converting the intermediate DC voltage into a DC output voltage for driving LEDs of the LED tube.Type: GrantFiled: July 20, 2016Date of Patent: January 9, 2018Assignee: Lite-On Technology Corp.Inventors: Ting-Yi Hsu, Shang-Jin Yan, Yu-Kang Lo
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Patent number: 9780637Abstract: A buck converter includes: a first input terminal; a second input terminal; a first output terminal; a second output terminal; an internal node; a first inductor, a second inductor and a main switch connected in series between the first input terminal and the internal node; a third inductor connected between the internal node and the first output terminal; a fourth inductor connected between the second input terminal and the second output terminal; a first auxiliary switch connected between the internal node and the second output terminal; and a second auxiliary switch connected between the second input terminal and the first output terminal.Type: GrantFiled: October 13, 2015Date of Patent: October 3, 2017Assignee: Lite-On Technology Corp.Inventors: Yu-Chen Liu, Jing-Yuan Lin, Huang-Jen Chiu, Yu-Kang Lo, Trong-Nha Quang, Po-Jung Tseng
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Publication number: 20170264125Abstract: An energy management system includes a power supply module, a charging module, an interface module and an energy management module. The power supply module provides an input power. The charging module generates, based on the input power, a first charge power and a second charge power in response to a first charge control signal and a second charge control signal. The interface module detects electrical energy stored in an energy storage device to generate a detection result. In response to the detection result, the energy management module determines an operating state of the energy storage device, and generates one of the first and second charge control signals.Type: ApplicationFiled: August 5, 2016Publication date: September 14, 2017Inventors: MING-TSUNG HSIEH, YI-CHAO FAN, PO-JUNG TSENG, SHANG-JIN YAN, YU-KANG LO
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Patent number: 9742279Abstract: An interleaved buck converter performs buck conversion by controlling operation of each of two switches thereof between an ON state and an OFF state. The switches have the same switching period and the same ON time interval, and a time delay from switching of one of the switches into the ON state to switching of the other one of the switches into the ON state equals the ON time interval of the switches minus a predetermined time interval.Type: GrantFiled: January 22, 2016Date of Patent: August 22, 2017Assignee: Lite-On Technology Corp.Inventors: Jing-Yuan Lin, Tse-Wei Chao, Yao-Ching Hsieh, Huang-Jen Chiu, Yu-Kang Lo, Po-Jung Tseng
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Publication number: 20170229954Abstract: A power supply apparatus includes a switch, a converting module and a control module. When the switch operates in an ON state, an input voltage is outputted through the switch to serve as an output voltage. The converting module selectively converts the input voltage into the output voltage. When the power supply apparatus operates in a mode where the switch operates in an OFF state, where the converting module performs the conversion, and where the output voltage is stabilized at a target voltage value, and when a condition associated with the input voltage is met, the control module causes the output voltage to gradually change toward the input voltage.Type: ApplicationFiled: June 20, 2016Publication date: August 10, 2017Inventors: TE-HONG YANG, MING-TSUNG HSIEH, YU-KANG LO
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Publication number: 20170231047Abstract: An LED driver of an LED tube includes: an AC-to-DC converting module converting an AC voltage received from a ballast into an intermediate DC voltage that is smaller than or equal to a predetermined threshold voltage, and a DC-to-DC converting module converting the intermediate DC voltage into a DC output voltage for driving LEDs of the LED tube.Type: ApplicationFiled: July 20, 2016Publication date: August 10, 2017Inventors: TING-YI HSU, SHANG-JIN YAN, YU-KANG LO
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Patent number: 9729046Abstract: A power supply apparatus includes a switch, a converting module and a control module. When the switch operates in an ON state, an input voltage is outputted through the switch to serve as an output voltage. The converting module selectively converts the input voltage into the output voltage. When the power supply apparatus operates in a mode where the switch operates in an OFF state, where the converting module performs the conversion, and where the output voltage is stabilized at a target voltage value, and when a condition associated with the input voltage is met, the control module causes the output voltage to gradually change toward the input voltage.Type: GrantFiled: June 20, 2016Date of Patent: August 8, 2017Assignee: Lite-On Technology Corp.Inventors: Te-Hong Yang, Ming-Tsung Hsieh, Yu-Kang Lo
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Patent number: 9698671Abstract: A single-stage AC-to-DC converter includes a bus capacitor, a power factor correcting module, a resonant converting module and a control module. The power factor correcting module generates, based on an AC (alternating current) input voltage, a first control signal and a second control signal, a DC (direct current) bus voltage across the bus capacitor and an intermediate voltage switching between the bus voltage and zero. The resonant converting module generates a DC output voltage based on the intermediate voltage. The control module generates, based on the bus voltage, the first and second control signals, each of which switches between an active state and an inactive state and has a duty cycle associated with the bus voltage.Type: GrantFiled: January 22, 2016Date of Patent: July 4, 2017Assignee: Lite-On Technology Corp.Inventors: Jing-Yuan Lin, Kuan-Fu Chou, Yao-Ching Hsieh, Huang-Jen Chiu, Yu-Kang Lo, Po-Jung Tseng
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Patent number: 9673716Abstract: A resonant converter includes: a transformer including a first primary winding, a second primary winding and a secondary winding, each primary winding having a first end terminal and a second end terminal; a first switch coupled to the first end terminal of the first primary winding; a resonant inductor and a resonant capacitor connected in series between the second end terminal of the first primary winding and the first end terminal of the second primary winding; a second switch coupled between the first end terminals of the first and second primary windings; and a third switch coupled between the second end terminals of the first and second primary windings.Type: GrantFiled: October 28, 2015Date of Patent: June 6, 2017Assignees: Lite-On Technology Corp., Lite-On Electronics (Guangzhou) LimitedInventors: Yu-Chen Liu, Jing-Yuan Lin, Huang-Jen Chiu, Yu-Kang Lo, Po-Jung Tseng
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Publication number: 20170133926Abstract: A single-stage AC-to-DC converter includes a bus capacitor, a power factor correcting module, a resonant converting module and a control module. The power factor correcting module generates, based on an AC (alternating current) input voltage, a first control signal and a second control signal, a DC (direct current) bus voltage across the bus capacitor and an intermediate voltage switching between the bus voltage and zero. The resonant converting module generates a DC output voltage based on the intermediate voltage. The control module generates, based on the bus voltage, the first and second control signals, each of which switches between an active state and an inactive state and has a duty cycle associated with the bus voltage.Type: ApplicationFiled: January 22, 2016Publication date: May 11, 2017Inventors: JING-YUAN LIN, KUAN-FU CHOU, YAO-CHING HSIEH, HUANG-JEN CHIU, YU-KANG LO, PO-JUNG TSENG
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Publication number: 20170126125Abstract: An interleaved buck converter performs buck conversion by controlling operation of each of two switches thereof between an ON state and an OFF state. The switches have the same switching period and the same ON time interval, and a time delay from switching of one of the switches into the ON state to switching of the other one of the switches into the ON state equals the ON time interval of the switches minus a predetermined time interval.Type: ApplicationFiled: January 22, 2016Publication date: May 4, 2017Inventors: JING-YUAN LIN, TSE-WEI CHAO, YAO-CHING HSIEH, HUANG-JEN CHIU, YU-KANG LO, PO-JUNG TSENG
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Publication number: 20170063213Abstract: A flyback converter includes: a transformer including a primary winding and a secondary winding; a first switch coupled to the primary winding; a first control module configured to control the first switch; a second switch coupled to the secondary winding; and a second control module configured to control the second switch, such that the second switch operates in an ON state during a first time period and during a second time period which follows the first time period, and such that a current flowing through the secondary winding has a direction during the second time period opposite to that during the first time period.Type: ApplicationFiled: April 21, 2016Publication date: March 2, 2017Inventors: CHENG-TAI LIN, TING-YI HSU, CHENG-HUNG LIN, MING-TSUNG HSIEH, YU-KANG LO